Friction draft-rigging.



J. F.0GONNOR.

FRIGTION `:DRAFT RIGGING- APPLIOATION FILED Dm. ze. 19.10.

Patented June 13,1911.

Patented .111119 13, 1911.

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i 1ra/VL), :240(Cno1( Tdq- J. F. O'GONNOR. PRIGTION DRAFT RIGGING.APPLICATION FILED DEU. 2B, 1910.

994,779.kk y

JQF. GCONNOR.

rnwTI'oN DRAFT mame. n APPLICATION FILED DEO. Z8, 1910. n 994,779, 9Patented June 13, 1911.

3 SHEETS-SHEET 3.

UNITED STATES' PAfiENT OFFICE.

:form r. oooimoii, or unicaen, ILLINOIS, assiiroa ro winmix CHICAGO,ILLmoIs.

morren nnannmanre.

spaanse of um naar. yPatented, June '13, 1911.

Application Mediacenter as, i910. serial no. 599,753.

ya friction draft rigging of a strong, simple,

price. To

eicient and dura le construction, ,which will be of relatively highcushioning capacity and at the Sametime adapted to proper y andcertainly release without danger of sticking, and in which all theAfrictional parts or elements may be made of relatively `cheap materialwithout special hardening thus adapting the gear to be manufactu Vatsmall cost and to be furnished at a low ractically accomplish this ob-]ect or resu t, and herein my invention con- A sists, I combine with thedraw-bar, follow.-4

ers, s ring ringcage friction shell friction 06s :in wedge,slipplemental pairallel faced friction plates which are interposedbetween the friction faces of the shoes and shell and abut-at one endagainst the s ring inge, the friction shell and spring normally, or whenthe sp spaced apart, so that a lsililging frictional movement may takelace between the supplemental friction p ates and the friction shell,and also between the friction shoes and the supplemental plates; thuscreating a double friction, and thereby producing a friction i ar ofrelatively high cushionsiigg capaci y use of a wedge which is s cientlluntto insure a proper, certain and `construction of parts and devicesand in the reliabe release action. The friction shell being made ascustomary'of malleable iron, this enables me to `make the sup lementalfriction llates of a relatively c esp material suc as ordinary springsteel, and the friction shoes and wedge .of malleable iron.

My invention `also consists in the novel novel combinations of arts .anddevices herein shown and .descri and more particulrly in the clallll- Inthe drawing, Figure 1 is a plan view, ly in horizontal section of a aftmy invention. Fig. 2 is a si `e elevation. F1 3 is aversection online Hof Fig. 1. Fig. '4

is expand isy a detail, central, longitudinal .section of thefrictionshell, springcage and contained parts, showing the same in theirnormal or expanded itinn. Fig-5 is a similar view, showing t e samepartially compressed or under preliminary compression. Fig. 6 is asimilar view'showin the parts Yfully comressed. Fig; :Tijs agetail'cross section on `ig. 4:, 8 is a detail cross Section on line 8 8 lofig. 5,. Fi 9 is ar `partial end elevation, looking from ine 99 10 is apartial end elevaof Fig. 6 and ine 1111-10 of Fig. 6. Fig.

tion lokiiig from 11 is a central, longitudinal section, illus-v tratinga nicdifiton-in which to increase the'L cushioning capacity of Vthedraft rigng, the wedge is made more acute and antiiction rollers are ind between the wedgle faces of the wedge and friction a .e

thev ctien shoes having hain steel wear plates `for the anti-frictionroll- 'U erste hear Figs. 12, 13, 14 15 and 16 'are detail perspectiveviews of the friction shell, sprin cage, wed one of the friction shoes a.one of the ictipn plates,

eetively. Y mi the drawing, 1, 1 represent center sills or other framemembers ofthe car to which the draft rigging is applied, 2 the draw-bar,

3 the draft yoke, 4 the followers, 5, draft" lugs or stop shoulders forthe followers toabut against, the same being preferabl formed on inte lal cheek lates 7, 7, whic are also furni ed with miting stops orshoulders 8 9 to limit the movement of the followers and the comressionof the cush-` ionin mechanism. T e s ring 10 preferably lasmaller spring 1 nest' within it The spring 10 lits at its rear enwithin the spring cage 12 which is normally spaced apart at its frontend from the friction shell4 l 13. At their front'ends, the springs 10,11

abut against the friction shoes 14, which are preferably three innumber, and `furnished with lexternal friction faces 15 and each withico an inner wedge fac'e 16 which is acted upon the wedge' 17, the samereferabl hah ne wedge faces 18 or or one o eac the friction shoes. Thefriction shell 13 is referably hexagonal in cross section and internalilat longitudinally extending wedge faces 19.

20 are su pleinental parallel faced friction lates whic are inter osedbetween the dat, ongitudinally exte mg friction faces of the frictionshelland friction shoes, andv which have a sliding frictional engagementwith both the friction shell and shoes. The supplemental friction platesabut at one end against 'a shoulder 21 on the spring cage, the springcage having also lugs 22 which enter holes 23 in the supplementalfriction plates toconnect the saine with the spring ehe friction shell13 has at its front end a flange or shoulder 24 adapted to engage thefront endof the friction shoes, and thus cause ythe .friction shell tobe returned to normal position with the shoes in the release movementunder expansion of the coinpressed spring. f

The spring cage 12 at its rear end is furnished Awith a cap 25,preferably havingv a bevel face 26 engaging a bevel face 27 ofthe flange28 at the rear end of the spring eagle. The cap isconnected by a rod 29with t e wedge 17, the wedge having a cavity 30 to receive the head 31of the-connecting rod,

and the cap 25 having a recess 32 toreceive the nut 33 of the connectingrod.l A precompression follower 34 is prefthe sprin l10 and 11 and therear follower V"to provi e for a vlimited preliniina compression of thesprings before the iction.

cushionin mechanism is brought into action.

To roper y support and center the rear end ylower 34.

R friction lates 20, andalso to lcause the fricof t e inner ring 11, aspring seat 35 having a boss .36 or enga engentwith the spring 11 ismounted upon t e-connecting rod 29, the 'same preferably being madeintegral with thepreliminary compression fol- `In operation under eitherpulling or'buf- 'ing'strains, the first action of the draw-bar movementis to force the preliminary compression follower 34 inward flush withthe rear face of .thes ring cage 12 and its capI 25., as shown in ig. 5.Further movement ofthe draw-bar causes the friction shoes underexpansion of the'wedge to further compress the spring and tofrictionally slide in respect to the interposed. supplemental tion 1.13t o frictionally slide on and against the supplemental friction plates,thus creating a dou lerfri'ction and a relatively high. cushioningcapacity with. a relatively bluntwedge 17, the wedge faces of which aresuicieiitl .blunt to always secure a certain and rlia lelrelease.action. In ythe modification illustrated in Fig. 11, the `wedtio'n ro ers" are interposed between the wedge 4plemental friction pates abut at is ni'ade more acute, and anti-fric` iron or steel, thefriction shoes and friction shell being, asin the first describedconstruction, of `malleable iron.

I claim L'In a friction draft rig 'n bination with the draw-bar, -iatthe coin- .yoke and followers vof a spring cage and sprin a frictionshell, friction shoes and wedge wgithin the shell, and parallel facedsupplemental friction plates interposed between the friction shel andfriction shoes, and having a frictional action and engagement with boththe friction shell andshoes, substantially as specified. y

2. In a friction draft rig ,the combination with the draw-banilsit yokeand followers, of a spring cage andl spring, -a friction shell, frictionshoesand wedge within the shell, and parallel faced supplementalfriction lates interposed betwenthe friction shel and friction shs, andhaving a frictional action and engagement with both the friction shelland shoes, the friction shell having -a shoulder a inst which saidsupsubstantially as specified.

3. In a fr iction draft rigging, the combination with the draw-bar,draft yoke and followersil of a spring cage and spring, a-

frictions ell, friction shoes and wedge withone end,

in the shell, and parallel faced supplemental friction lates interposedbetween the friction shel and friction Shoes, and having a frictionalaction and engagementwith both the friction shell and shoes, thefriction Shell having a shoulder against which said supplementalfriction p ates abut at one end, and also having lugs engaging openingsin the. friction plates to connect the friction 'plates to the springcage, substantially as specified.

4. In a friction draft rigging, the combination with a spring and springca of a friction shell, friction shoesand w of parallel longitudinallextending friction faces and supp ementalfriction platesinterposedbetween Ythe friction shoes and shell, and havinlg parallel frictionfaces in sliding frictona shell and shoes, the friction shell having ashoulder at one 'end adapted to enga e the adacent end of the 'frictionshoes,I su stantia ly as specified'.`

5.. In arfriction draft rigging, the combination witha s ring cage,friction s hellf, friction" shoes an wedge, of a spring -reacting at oneend against the s ring cage and at the other endv against t e frictionshoes, and supplemental parallell faced friction plates interposedbetween the friction shell and friction shoes and abutting at one sp ved.

6. In. a friction draftarigging, the comengagement with Y the ses thefriction shoes and shell having a plurality .flatv "end a ainst thelspring cage, substantially as hination with a hexagonal friction shellhaving internal, longitudinally extending flat friction faces, aplurality of friction shoes each having a pair of externallongitudinally extendin flat friction faces and an internal wedge aoe,the wedge having wedge faces engagin the wedlge faces of said frictionshoes, an a plura ity of parallel faced friction platesvinterposeclbetween the friction faces of said shell and shoes and abut- 10 ting atone end against the spring cage, substantially as specified.

JOHN F. OCONNOR.l Witnesses:

EDMUND ADoooK, 4 PEARL ABRAMB.

